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HL: Fachverband Halbleiterphysik

HL 35: Poster I

HL 35.45: Poster

Dienstag, 8. März 2016, 15:00–19:00, Poster A

Treatment of concentrated solar radiation PV modules on the basis of AlGaAs-GaAs heterostructures — •Lia Trapaidze¹, Rafiel Chikovani², Ia Trapaidze², and Gela Goderdzishvii² — ¹3 Chavchavadze Ave., 0179 Tbilisi, Georgia — ²Kostava 77, 0175 Tbilisi, Georgia

Among the alternative and renewable sources of energy the transformation of solar energy directly into electric energy attracts more growing attention. Till present the photoelectric transformers of solar radiation practically have been prepared only on crystalline silicon. The goal of researchers is to increase efficiency of photoelectric transforming systems and to lower the cost. In the present work for fabrication of heterostructures we have used the low-temperature liquid-phase epitaxial method in which we have introduced the changes and identified: a chemical composition of solid solutions of separate layers of multilayer heterostructures; the optimal thicknesses; type and concentration of doping material; the temperature-time modes of the growing processes. As a result in the obtained heterostructures the high value of efficiency coefficient of solar concentrated radiation up to 23,4% (K=100-500) and stability of technological process have been achieved. By using of testing methods of elements and modules we have studied the main parameters both in laboratory and field conditions. We have developed design and fabricated a pilot model of low power tourist mobile photoelectric system.